Without -dip1000? Nothing. With -dip1000, I'd guess that it has to do with
pointers or references marked with scope, but I don't know. DIP 1000 might
say. If not, then you'd probably have to ask Walter. scope ends up in all
kinds of new, weird places with -dip1000. He covered some of it in his dconf
talk this year, but I don't know how much things have changed since then.
- Jonathan M Davis